СПИСОК патентов США - подгруппа МПК16 H04M19/06
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| № п/п | Номер патента | Название патента | |||
1992 | |||||
| 1 | 5157711 | Telephone terminal device | |||
1987 | |||||
| 2 | 4685129 | Power transmission arrangement for telecommunications systems | |||
1983 | |||||
| 3 | 4374303 | Power supply control circuit for subscriber carrier telephone system | |||
1979 | |||||
| 4 | 4145572 | Power supply control circuit for subscriber carrier telephone system | |||
1977 | |||||
| 5 | 4025729 | Telephone ringing control circuits | |||
| © 2017, ПАТ-Инфо, В.И. Карнышев
Дата формирования списка: 03.04.2017 | |||||